近年来中国从国外引进了大量儿童科普类畅销书，引进版图书以其准确性、趣味性以及通俗性等特点深受中国小读者的欢迎。因而引进版图书的翻译活动事关儿童科普读物的质量，甚至是提升整个国民科学素质的事业。但此类图书的翻译研究却十分有限，所以笔者认为儿童科普文本的翻译研究不仅具有重要的实践意义，而且有很大的必要性。笔者借此翻译Extreme Planet的实践报告，拟对此类文本的翻译策略做一探讨。 儿童科普读物既具有科普类文本的一般特点，又由于其受众的特殊性而具有独特而鲜明的特色，如趣味性和具象性。鉴于尤金·奈达的“功能对等”理论以读者的反应为出发点，比较适合以儿童为读者的图书特点，笔者拟以功能对等理论为基础，探讨儿童科普读物可采用的翻译策略。本文将联系笔者本人对Extreme Planet一书的翻译实践，挑选出具有代表性意义的具体案例，并结合实例阐述该理论对于翻译同类文本的指导作用。笔者从语义、文化移植以及文体风格三个层面对议题进行探讨，总结出使原文和译文达到“功能对等”的一般性意义的翻译策略。最终，笔者验证并总结了功能对等理论对于儿童科普类文本的指导意义，并为其他译者提供可参考借鉴的经验和教训。

In recent years, a large number of Children’s popular science books have been imported to China. The imported books are very popular among Chinese children because of their preciseness, fun, popularity and other features. Therefore, translation activity is very important to the quality of these imported books and is even crucial to improving the scientific literacy of the whole nation. Given the limited previous and current studies on translation of children’s popular science books, it is very necessary and practical to conduct more researches on this topic. Apart from the general characters of most popular science books, children’s popular science books are featured with its own distinctive characters, for example its interestingness, concreteness. Eugene A. Nida’s “Functional Equivalence Theory” attaches great importance to readers’ reactions, which is very important for books that are targeted for children as the readers. Only in the guidance of such theoretical concept, can translators make their translation works better understood by children as well as more effective in spreading scientific knowledge to the public. Therefore, this report is based on the “Functional Equivalence Theory” to explore the translation strategies of Children’s popular science books. The specific and representative examples extracted from the English-to-Chinese translation experience of Extreme Planet are analyzed in this report to explain how the theory is applied in the translation activities of such texts. The exploration is carried out in three levels, i.e. semantic, cultural transplantation and style levels. In the end, the translation strategies of general use to achieve “Functional Equivalence” in similar texts are concluded. As a result, the report summarized and verified the guidance value of the “Functional Equivalence Theory”, for the purpose of offering reference and lessons to other translators.